Na3V2(PO4)3 coated by N-doped carbon from ionic liquid as cathode materials for high rate and long-life Na-ion batteries

A facile and simple hydrothermal assisted sol–gel route was developed to prepare nitrogen doped carbon coated Na₃V₂(PO₄)₃ nanocomposites (denoted as NVP@C–N) as cathodes for sodium ion batteries (NIBs).